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new simplified API to fill sparse matrices (the old functions are

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deprecated). Basically there are now only 2 functions to set a
coefficient:
1) mat.coeffRef(row,col) = value;
2) mat.insert(row,col) = value;
coeffRef has no limitation, insert assumes the coeff has not already
been set, and raises an assert otherwise.
In addition I added a much lower level, but more efficient filling
mechanism for
internal use only.
This commit is contained in:
Gael Guennebaud
2009-05-04 14:25:12 +00:00
parent ddb6e96d48
commit 2829314284
12 changed files with 287 additions and 110 deletions
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18
test/sparse.h
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@@ -64,9 +64,11 @@ initSparse(double density,
std::vector<Vector2i>* zeroCoords = 0,
std::vector<Vector2i>* nonzeroCoords = 0)
{
sparseMat.startFill(int(refMat.rows()*refMat.cols()*density));
sparseMat.setZero();
sparseMat.reserve(int(refMat.rows()*refMat.cols()*density));
for(int j=0; j<refMat.cols(); j++)
{
sparseMat.startVec(j);
for(int i=0; i<refMat.rows(); i++)
{
Scalar v = (ei_random<double>(0,1) < density) ? ei_random<Scalar>() : Scalar(0);
@@ -85,7 +87,7 @@ initSparse(double density,
if (v!=Scalar(0))
{
sparseMat.fill(i,j) = v;
sparseMat.insertBack(j,i) = v;
if (nonzeroCoords)
nonzeroCoords->push_back(Vector2i(i,j));
}
@@ -96,7 +98,7 @@ initSparse(double density,
refMat(i,j) = v;
}
}
sparseMat.endFill();
sparseMat.finalize();
}
template<typename Scalar> void
@@ -107,9 +109,11 @@ initSparse(double density,
std::vector<Vector2i>* zeroCoords = 0,
std::vector<Vector2i>* nonzeroCoords = 0)
{
sparseMat.startFill(int(refMat.rows()*refMat.cols()*density));
sparseMat.setZero();
sparseMat.reserve(int(refMat.rows()*refMat.cols()*density));
for(int j=0; j<refMat.cols(); j++)
{
sparseMat.startVec(j); // not needed for DynamicSparseMatrix
for(int i=0; i<refMat.rows(); i++)
{
Scalar v = (ei_random<double>(0,1) < density) ? ei_random<Scalar>() : Scalar(0);
@@ -128,7 +132,7 @@ initSparse(double density,
if (v!=Scalar(0))
{
sparseMat.fill(i,j) = v;
sparseMat.insertBack(j,i) = v;
if (nonzeroCoords)
nonzeroCoords->push_back(Vector2i(i,j));
}
@@ -139,7 +143,7 @@ initSparse(double density,
refMat(i,j) = v;
}
}
sparseMat.endFill();
sparseMat.finalize();
}
template<typename Scalar> void
@@ -156,7 +160,7 @@ initSparse(double density,
Scalar v = (ei_random<double>(0,1) < density) ? ei_random<Scalar>() : Scalar(0);
if (v!=Scalar(0))
{
sparseVec.fill(i) = v;
sparseVec.insertBack(i) = v;
if (nonzeroCoords)
nonzeroCoords->push_back(i);
}